Is decoding performed on the client(jsmpeg.min.js) or the server(node-rtsp-web)? #428

Goohyun3436 · 2024-03-26T07:54:00Z

I tried streaming multichannel using server(node-rtsp-web) and client(jsmpeg.min.js).

When I register more than 4 channels, the frame breaks.

Is "jsmpeg.min.js" simply the role of converting base64 values to suit canvas or does it perform decoding?

Or is it transmitting the decoding value from ffmpeg on server(node-rtsp-web) to the client(jsmpeg.min.js) using webSocket?

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>node-rtsp-web</title>
</head>
<body>
    <canvas id="canvas"></canvas>
    <script type="text/javascript" src="/jsmpeg.min.js"></script>
    <script type="text/javascript">
        player = new JSMpeg.Player(`ws://SERVER_URL:STREAM_PORT`, {
            canvas: document.getElementById('canvas')
        })
    </script>
</body>

</html>

server.js

Stream = require('node-rtsp-stream')

stream = new Stream({
    name: `STREAM`,
    streamUrl: RTSP_URL,
    wsPort: WS_PORT,
    ffmpegOptions: {
        '-s': '640x360',
        '-b:v': '1000k',
        '-r': 20
    }
})

phoboslab · 2024-03-26T07:58:02Z

I'm not familiar with node-rtsp-web, but it seems to transcode any(?) input video into MPEG1 on the server. So MPEG1 video goes over the wire.

JSMpeg decodes MPEG1 on the client.

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Is decoding performed on the client(jsmpeg.min.js) or the server(node-rtsp-web)? #428

Is decoding performed on the client(jsmpeg.min.js) or the server(node-rtsp-web)? #428

Goohyun3436 commented Mar 26, 2024 •

edited

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phoboslab commented Mar 26, 2024 •

edited

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Is decoding performed on the client(jsmpeg.min.js) or the server(node-rtsp-web)? #428

Is decoding performed on the client(jsmpeg.min.js) or the server(node-rtsp-web)? #428

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Goohyun3436 commented Mar 26, 2024 • edited Loading

phoboslab commented Mar 26, 2024 • edited Loading

Goohyun3436 commented Mar 26, 2024 •

edited

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phoboslab commented Mar 26, 2024 •

edited

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